while True:
    try:
        print('type in your age: ')
        age = int(input())
        print()
        age = float(age)

        if age >= 65:
            print('u are an old guy, enjoy retiring')
            break
        elif age >= 18:
            print('u are an adult, enjoy your tour')
            break
        elif age >= 7:
            print('u are an unlucky child, u will go to an unlucky school')
            break
        elif age >= 3:
            print('just a little baby, so boring')
            break
        elif age >= 0:
            print('hellow world')
            break
        else:
            print('u are a genius absolutely')
    except ValueError:
        print('fxxk u...')

print('press any btn to exit: ')
input()